The Volgograd refinery processes nearly 6% of all oil in Russia, while the Astrakhan facility is one of the country’s major energy hubs, refining 12 billion cubic meters of gas condensate annually. Critical damage reported at Russian energy facilities According to Ukrainian security sources,

Ukrainian drones attacked an oil refinery in Volgograd and a gas processing plant in Astrakhan in Russia overnight on Feb. 3, a source in the Security Service of Ukraine (SBU) told the Kyiv Independent.

"This refinery is one of the 10 largest oil refineries in Russia in terms of design capacity and is involved in supplying the Russian occupatying army," the General Staff said in a statement.

Ukrainian drones have allegedly attacked the area of an oil refinery and an oil depot in Volgograd. Russian authorities have claimed that falling drone wreckage caused a fire at the oil refinery. Source: BBC News Russian with reference to social media;